JPH10274050A - Rotary piston engine and pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary piston engine rotatable at high speed by the reciprocating motion of pistons provided being hinged on one side in differential space formed by a rotary housing and a cylindrical rotor. SOLUTION: Inside a rotary housing 1 with the elliptic inner surface, a cylindrical rotor 2 with a diameter approximate to the minor axis of the ellipse is coaxially provided, and side housings corresponding to the cylindrical rotor 2 are provided on both sides. The optional number of piston fitting shafts 6 are provided at the rotor, and pistons 3 reciprocated with these shafts 6 as hinges are fitted. Connecting rods 4 are fitted to the pistons 3. One end of each connecting rod 4 is fitted to a roller shaft 9 on the side fitted with a roller 8 of a link 5, and the other shaft of the link 5 is fitted to the rotor 2. The roller 8 travels between an outer rail 20 and an inner rail 21 provided at the side housings. Each piston 3 therefore moves while a piston end 13, the tip of the piston 3, is always in proximity to and in contact with the inner surface of the rotary housing 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary piston having a differential space formed by a rotary housing and a cylindrical rotor. The rotary piston has a piston with one hinge, and can rotate at high speed by precisely controlling the reciprocating motion of the piston. It is about the engine.

[0002]

2. Description of the Related Art Various types of rotary engines, reciprocating engines, and the like have been proposed, and vane type pumps and rotary pumps having one of the pistons as hinges, which are actually put into practical use, are known as pistons. In general, a method of pushing the piston from the inside with a spring, a cam, or the like is used for the swinging motion.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional engine. In the case of a reciprocating engine or the like, it is inefficient to directly change the explosive power into rotational power. The weight per horsepower was heavy and the structure was complicated. In addition, with respect to intake and exhaust, in a two-cycle engine, there is a problem that the air-fuel mixture and the combustion gas are mixed, and in a four-cycle engine, there is a problem that the area of the intake port or the exhaust port cannot be larger than half the area of the upper surface of the piston. Furthermore,
In vane pumps and vane-type engines, the surface pressure between the piston and the rotor housing increases due to centrifugal force,
It was difficult to rotate at high rotation speed due to high resistance.

[0004]

In order to achieve the above-mentioned object, the present invention provides a rotary housing having an elliptical flat shape, a rotor having a cylindrical shape having a diameter close to the short diameter thereof, and a coaxial core. There is provided a side housing which is fitted on the upper side and shaped so that the rotor can be fitted on both sides thereof. In addition, an arbitrary number of piston mounting shafts are provided on the rotor, a piston that reciprocates with the piston mounting shaft as a hinge, a connecting rod is attached to the piston, and the piston is rotated by a roller that moves the link and rail connected to the connecting rod. By adopting a structure in which the inner surface of the housing moves while approaching, the mixed gas of fuel and air sucked from the intake port is sequentially compressed between the pistons, and is ignited when the rear piston mounting shaft comes to the short end a. Since the explosive force ignited by the plug and pushing the piston at that time always acts at an angle close to a right angle with respect to the output shaft, it is possible to efficiently change the rotational motion. Further, since the number of explosions per rotation of the output shaft is large, the vibration is small, and the size and the weight are smaller and smaller than a reciprocating engine or a Wankel rotary engine having the same output.

Further, when the piston mounting axis of the rear piston is at the short end b, the piston end of the rear piston is expanded from the position of the piston end of the front piston to the volume between the intake pistons. When the volume between the intake port and the piston on the exhaust side begins to decrease up to a certain position, the piston end of the piston when the piston mounting axis of the previous piston is at the short end b from the position where the piston end of the previous piston is located By setting the exhaust port up to the position, a large area can be secured for the intake port and the exhaust port, so that an intake / exhaust resistance is small, and an extremely efficient engine in which intake / exhaust is continuously performed is provided.

Further, by accurately controlling the movement of the piston by a mechanism of a roller and a link running on the rail,
Since the piston and the rotor housing can rotate without contacting each other, the resistance does not increase, so that high output can be generated at high rotation.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, since the present invention is an engine based on the volume of the space between the front and rear pistons, a line connecting the center end 32 of the rotor to the long diameter end and the short diameter end of the rotary housing 1 is shown. When divided into four sections, the intake stroke is when the rear piston mounting shaft 6 is between the short diameter end b29 and the long diameter end a30, and the compression stroke is when the rear piston mounting shaft 6 is between the long diameter end a30 and the short diameter end a28. The time between the short diameter end a28 and the long diameter end b31 can be defined as the combustion stroke, and the time between the long diameter end b31 and the short diameter end b29 can be defined as the exhaust stroke.

The air-fuel mixture entering through the intake port 11 is compressed at the same time as the piston 3 is lowered by the compression stroke, and when the piston mounting shaft 6 comes to the position of the short end a28, the piston 3 and the rotary housing 1 are joined. As a result, it is efficiently sealed, and at that time, it is ignited by the spark plug 19 and the combustion gas in the combustion chamber 18 pushes the piston working surface 14,
The rotor 2 fixed to the output shaft 15 is rotated. Further, the combustion gas continues to expand and is discharged from the exhaust port 12. Thereafter, when the mounting shaft 6 comes to the position of the short-diameter end b29, the piston 3 and the rotary housing 1 are hermetically closed, and the exhaust can be completely exhausted without mixing or interfering with the intake and exhaust.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. In FIG. 1, a rotary housing 1 having a flat and elliptical inner surface is provided, and a rotor 2 having a cylindrical shape with a diameter close to the minor axis is fitted on a coaxial core, and the rotor can be fitted on both sides thereof. A side housing 17 is provided. Further rotor 2
Is provided with an arbitrary number of piston mounting shafts 6, and the piston 3 reciprocates using the piston mounting shaft 6 as a hinge.
The shape of the piston 3 is designed to be fitted to the inner surface of the rotary housing 1 when the piston mounting shaft 6 is at the short diameter end a28 and the short diameter end b29. Further, a connecting rod 4 is attached to the piston 3, one of the connecting rods 4 is attached to one axis of a link 5 provided with a roller 8, and the other axis of the link 5 is attached to the rotor 2 so as to move as a hinge.

Position of link hinge 7 and piston pin 10
Is the ratio of the distance A from the center of the piston mounting shaft 6 to the center point 32 of the rotor and the distance a2 from the center point 32 of the rotor to the center of the position of the link hinge 7; Distance B to the end 13 and the center of the piston mounting shaft 6 and the piston pin 10
The link hinge 7 attachment position is provided on a line A connecting the center point 32 of the rotor and the piston attachment shaft 6 with the same ratio of the distance b1 to the center of the piston, and a piston B is provided on a line B connecting the piston attachment shaft 6 and the piston end 13. The position of the pin 10 is provided. The axial distance D at two points of the link 5 is equal to the distance b1 from the center of the piston mounting shaft 6 to the center of the piston pin 10, and the axial distance C of the two points of the connecting rod 4 is measured from the center of the piston mounting shaft 6. Link hinge 7
Is set equal to the distance a1 to the center of.

As a result, the inner surface shape of the rotary housing 1 and the shape of the center line 24 of the rail become elliptical with the same elliptical ratio.

Further, by forming the link 5 and the roller shaft 9 as an integral structure, a portion that interferes with the link hinge 7 behind the roller shaft 9 can be cut, so that the shaft diameter of the link hinge 7 can be increased. As a result, the strength of the axis of the link 5 and the link hinge 7 can be increased.

The piston 3 and the rotor 2 are connected to the output shaft 1
Spoke 2 fixed to 5 or made integral with output shaft 15
By attaching from the inside of the piston 3 to the tip of 5,
The rotor 2 can be formed in a simple and easy-to-manufacture ring shape, and the rigidity of the piston mounting shaft 6 does not decrease even in a rotary piston engine in which the piston 3 and the rotor housing 1 are wide.

Further, by forming spokes having holes so that the link 5 can be easily passed through the spokes 25 from the side, not only the assembling becomes easy at the time of assembling, but also the strength of the spoke portion is increased and the weight is reduced. it can.

Since the rotation direction of the roller is reversed between the outer rail 20 and the inner rail 21, the gap between the roller 8 and the rails 21 and 22 must be made larger when there is only one roller. , Outer rail 2
0 and the outer roller 2 running separately on the inner rail 21
By attaching the inner roller 23 and the inner roller 23, the respective rollers 22, 23 can be rotated separately, so that the rotation resistance of the rails 20, 21 and the rollers 22, 23 can be reduced, and the gap can be narrowed. Therefore, the movement of the piston 3 can be accurately controlled.

In the embodiment shown in FIG. 7, the inner rail 21 and the inner roller 23 are tapered to form the inner rail 21.
By taking in and out, the gap between the roller and the rail can be adjusted.

Further, even if the inner rail 21 can be rotated, the rollers 8, 22, 23 and the rails 20, 21 can be rotated.
Can be adjusted.

Even if the link 5 is mounted on the connecting rod 4 instead of the roller shaft 9, the axial distance D at the two points of the link 5 is made equal to the distance b1 from the center of the piston mounting shaft 6 to the center of the piston pin 10. , Rotor center point 32
By providing the mounting position of the link hinge 7 on the line A connecting the piston mounting shaft 6 to the inner surface of the rotary housing 1, the shape of the inner surface of the rotary housing 1 and the shape of the center line 24 of the rail become elliptical with the same elliptical ratio.

In the embodiment shown in FIG. 10, the inner surface of the rotary housing 1 is changed to a cylindrical shape, and
Also, the inner rail 21 is also changed to a circular shape so that the rotary housing 1 and one point of the rotor 2 are in contact with or close to each other, and the center point 33 of the rail is set on a line connecting the center point 32 of the rotor to the center point 34 of the rotary housing. The inner diameter of the rotary housing 1 and the center line 2 of the rail
4 by making the ratio of the distance from the center point 32 of the rotor to the center point 34 of the rotary housing equal to the ratio of the distance from the center point 32 of the rotor to the center point 33 of the rail. And can be used as a one-room motor.

The embodiment shown in FIG. 11 can be used as a two-chamber pump or a two-chamber motor in addition to the engine.

[0021]

In the rotary engine thus invented, the number of explosions can be set by an arbitrary number of pistons for one rotation of the rotor and the output shaft. In order to make the specification that the difference between the long and short diameter of the rotary housing is reduced, and to make it a high rotation and high output type, the rotor diameter is made smaller and the number of pistons is reduced to 4 to 6 The engine can be made according to the purpose of use.

When the number of pistons is six as shown in FIG. 1, the number of explosions is 12 times that of a reciprocating four-cycle engine, because the number of explosions is six per rotation of the rotor. Since there is less gas leakage during the process, a piston ring or the like is not required. Therefore, it is possible to produce a high rotation type engine with little resistance by the piston.

Further, since the diameter of the rotor corresponding to the piston stroke of the reciprocating engine is larger than that of the reciprocating engine having the same horsepower, the torque is also increased.

In addition, since the intake and exhaust are performed independently of each other, the intake and exhaust are performed independently of each other regardless of the number of explosions without mixing or interference, so that high filling efficiency can be obtained. Therefore, the engine has a stable output characteristic with a small torque valley from low rotation to high rotation.

When used as a pump, 35
Assuming that 35a is the suction eye and 36, 36a is the discharge eye, the output shaft 15 is used as the input shaft to apply a rotational force to the reverse rotation of the engine, whereby a continuous discharge force can be obtained efficiently. When using it as a motor, 3
By pressing the piston working surface 14 by applying pressure using the pressure ports 6 and 36a, the output shaft 15 can be turned to obtain a large torque. Thereafter, it is discharged from 35 and 35a.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first aspect of the present invention.

FIG. 2 is a cross-sectional view taken along the line I-II of FIG.

FIG. 3 is a partial schematic view of claims 1 and 2 of the present invention.

FIG. 4 is a top view of the integrally formed link of claim 3 of the present invention.

FIG. 5 is a cross-sectional view of the piston according to claim 4 of the present invention when attached to the spokes from the inside and when a roller is attached to each of the rails according to claim 6 of the present invention.

FIG. 6 is a side view of a perforated spoke according to claim 5 of the present invention.

FIG. 7 is a partial schematic view of claim 7 of the present invention.

FIG. 8 is a partial schematic view of a rail according to claim 8 of the present invention.

FIG. 9 is a partial schematic view according to claim 9 of the present invention;

FIG. 10 is a sectional view of a one-chamber pump according to claim 10 of the present invention.

FIG. 11 is a sectional view of an example of use as a two-chamber pump of the present invention.

[Explanation of symbols]

1 is a rotary housing 2 is a rotor
3 is a piston 4 is a connecting rod 5 is a link
6 is a piston mounting shaft 7 is a link hinge 8 is a roller
9 is a roller shaft 10 is a piston pin 11 is an intake port
12 is an exhaust port 13 is a piston end 14 is a piston working surface
15 output shaft 16 is a bearing 17 is a side housing
18 is a combustion chamber 19 is a spark plug 20 is an outer rail
21 is an inner rail 22 is an outer roller 23 is an inner roller
24 is the center line of the rail 25 is the spoke 26 is the spoke hole
27 is a spring 28 is a short diameter end a 29 is a short diameter end b
30 is the major end a 31 is the major end b 32 is the center point of the rotor
33 is the center point of the rail 34 is the center point of the rotary housing 35 and 35a are the suction date for a pump, the discharge ports 36 and 36a for a motor are the discharge ports for a pump, and the pressurizing port for a motor Line and distance from the center of the piston mounting shaft 6 to the center point 32 of the rotor. a1 is the distance from the center of the piston mounting shaft 6 to the center of the crank 5 or the link hinge 7. a2 is the distance from the center point 32 of the rotor to the center of the crank 5 or the link hinge 7; B is a line connecting the center of the piston mounting shaft 6 to the piston end 13 and the distance.
b1 is the piston pin 1 from the center of the piston mounting shaft 6.
Distance to the center of 0. b2 is the distance from the piston pin 10 to the piston end 13. C is the axial distance between the two points of the connecting rod 4. D is the axial distance between two points of link 5

Claims (10)

[Claims] 1. A rotary housing (1) having a diameter similar to the minor axis of an ellipse and a rotor (2) having a cylindrical outer periphery fitted on a coaxial core inside a flat, rotary housing (1) having an elliptical inner surface. A side housing (17) is provided which is shaped to fit the rotor. Further, the rotor (2) is provided with an arbitrary number of piston mounting shafts (6),
A reciprocating piston (3) is mounted using the piston mounting shaft (6) as a hinge, and the piston (3) is mounted.
To the roller shaft (9) of the link (5) on the side where the roller (8) is mounted, and further connect the other shaft of the link (5) to the connecting rod (4). Attach the rotor (2) to move as a hinge,
When the roller (8) runs between the outer rail (20) and the inner rail (21) provided on the side housing (17), the piston end (1) which is the tip of the piston (3) is moved.
3) A rotary piston engine and a pump which move while always approaching and contacting the inner surface of the rotary housing (1). 2. The rotary piston engine and pump according to claim 1, wherein the link hinge (7) is mounted on a line (A) connecting the center point (32) of the rotor and the piston mounting shaft (6). 3. The rotary piston engine and pump according to claim 1, wherein the link (5) and the roller shaft (9) are made in one piece. 4. The piston (3) and the rotor (2) are fixed to the output shaft (15) or attached to the spoke (25) formed integrally with the output shaft (15) from the inside of the piston (3). The rotary piston engine and pump according to claim 1. 5. Fixed to the output shaft (15) of claim 4, or
2. The rotary piston engine and pump according to claim 1, wherein the rotary piston engine and the pump have a spoke having a perforated shape so that the link (5) can be easily passed through the spoke (25) formed integrally with the output shaft. 6. An outer roller (22) and an inner roller (23) running separately on an outer rail (20) and an inner rail (21) are attached to one roller shaft (9).
The rotary piston engine and pump according to claim 1. 7. The rollers (8), (22), (23) and the rails (20), (21) by tapering the inner rail (21) and the inner roller (23) and taking the inner rail (21) in and out. The rotary piston engine and the pump according to claim 1, wherein the gap of the rotary piston engine can be adjusted. 8. The rotary piston engine and pump according to claim 1, wherein the inner rail (21) is rotatable. 9. One of the links (5) is connected to a roller shaft (9).
2. The rotary piston engine and pump of claim 1, wherein the rotary piston engine and the pump are mounted on a connecting rod (4). 10. The inner surface of the rotary housing (1) is changed to a cylindrical shape, and the outer rail (20) and the inner rail (21) are also changed to circular shapes so that one point of the rotary housing (1) and the rotor (2) is changed. 2. The pump of claim 1, wherein said pump is in contact or close proximity.